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प्रश्न
Explain the role of the part of human eye responsible for power of accommodation of human eye.
उत्तर
The role of the ciliary muscles in the human eye, responsible for the power of accommodation, is to adjust the curvature of the eye lens. This adjustment allows the eye to focus on objects at different distances. When the ciliary muscles contract, the lens becomes thicker, decreasing its focal length to focus on near objects. Conversely, when the muscles relax, the lens becomes thinner, increasing its focal length to focus on distant objects. This process enables clear vision across a range of distances.
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संबंधित प्रश्न
What kind of lens is present in the human eye?
What is the:
near point of a normal human eye?
Fill in the following blank with suitable word:
The iris controls the amount of................entering the eye.
Nocturnal animals (animals which sleep during the day and come out at night) tend to have wide pupils and lot of rods in their retinas. Suggest reasons for this.
Name the respective organs in which the following are located and mention the main function of each:
(i) Iris
(ii) Semicircular canals
State the Function:
Aqueous humour
In a myopic eye, the image of the object is formed
At noon the sun appears white as
| Column I | Column II | ||
| 1 | Retina | a | Path way of light |
| 2 | Pupil | b | Far point comes closer |
| 3 | Ciliary muscles | c | near point moves away |
| 4 | Myopia | d | Screen of the eye |
| 5 | Hypermetropia | e | Power of accomodation |
Name the following:
Kind of retinal cells sensitive to dim light.
